Normans, Matilda. AR Penny. AD 1141. Cardiff mint. Elwine moneyer.

MATILDA IMP, crowned bust right, holding sceptre.
Cross pattee over cross fluery with triple pellets at the cross terminals.

Seaby 1326b.

This coin was unknown before the small Coed-y-Wenallt (Cardiff) 
hoard was found in 1980. Only a handful of this very rare reverse 
type were in the hoard.